ISourceContainer[] getSourceContainers(String location, String id) throws CoreException {

    ISourceContainer[] containers = (ISourceContainer[]) fSourceContainerMap.get(location);
    if (containers != null) {
      return containers;
    }

    ArrayList result = new ArrayList();
    ModelEntry entry = MonitorRegistry.findEntry(id);

    boolean match = false;

    IMonitorModelBase[] models = entry.getWorkspaceModels();
    for (int i = 0; i < models.length; i++) {
      if (isPerfectMatch(models[i], new Path(location))) {
        IResource resource = models[i].getUnderlyingResource();
        // if the plug-in matches a workspace model,
        // add the project and any libraries not coming via a container
        // to the list of source containers, in that order
        if (resource != null) {
          addProjectSourceContainers(resource.getProject(), result);
        }
        match = true;
        break;
      }
    }

    if (!match) {
      File file = new File(location);
      if (file.isFile()) {
        // in case of linked plug-in projects that map to an external JARd plug-in,
        // use source container that maps to the library in the linked project.
        ISourceContainer container = getArchiveSourceContainer(location);
        if (container != null) {
          containers = new ISourceContainer[] {container};
          fSourceContainerMap.put(location, containers);
          return containers;
        }
      }

      models = entry.getExternalModels();
      for (int i = 0; i < models.length; i++) {
        if (isPerfectMatch(models[i], new Path(location))) {
          // try all source zips found in the source code locations
          IClasspathEntry[] entries = MDEClasspathContainer.getExternalEntries(models[i]);
          for (int j = 0; j < entries.length; j++) {
            IRuntimeClasspathEntry rte = convertClasspathEntry(entries[j]);
            if (rte != null) result.add(rte);
          }
          break;
        }
      }
    }

    IRuntimeClasspathEntry[] entries =
        (IRuntimeClasspathEntry[]) result.toArray(new IRuntimeClasspathEntry[result.size()]);
    containers = JavaRuntime.getSourceContainers(entries);
    fSourceContainerMap.put(location, containers);
    return containers;
  }
 public static IMarker[] getProblemsFor(IResource resource) {
   try {
     if (resource != null && resource.exists()) {
       IMarker[] markers =
           resource.findMarkers(
               IJavaModelMarker.JAVA_MODEL_PROBLEM_MARKER, false, IResource.DEPTH_INFINITE);
       Set markerTypes =
           JavaModelManager.getJavaModelManager().compilationParticipants.managedMarkerTypes();
       if (markerTypes.isEmpty()) return markers;
       ArrayList markerList = new ArrayList(5);
       for (int i = 0, length = markers.length; i < length; i++) {
         markerList.add(markers[i]);
       }
       Iterator iterator = markerTypes.iterator();
       while (iterator.hasNext()) {
         markers = resource.findMarkers((String) iterator.next(), false, IResource.DEPTH_INFINITE);
         for (int i = 0, length = markers.length; i < length; i++) {
           markerList.add(markers[i]);
         }
       }
       IMarker[] result;
       markerList.toArray(result = new IMarker[markerList.size()]);
       return result;
     }
   } catch (CoreException e) {
     // assume there are no problems
   }
   return new IMarker[0];
 }
  /**
   * Returns the children of <code>source</code> which are affected by this operation. If <code>
   * source</code> is a <code>K_SOURCE</code>, these are the <code>.java</code> files, if it is a
   * <code>K_BINARY</code>, they are the <code>.class</code> files.
   */
  private IResource[] collectResourcesOfInterest(IPackageFragment source)
      throws JavaModelException {
    IJavaElement[] children = source.getChildren();
    int childOfInterest = IJavaElement.COMPILATION_UNIT;
    if (source.getKind() == IPackageFragmentRoot.K_BINARY) {
      childOfInterest = IJavaElement.CLASS_FILE;
    }
    ArrayList correctKindChildren = new ArrayList(children.length);
    for (int i = 0; i < children.length; i++) {
      IJavaElement child = children[i];
      if (child.getElementType() == childOfInterest) {
        correctKindChildren.add(((JavaElement) child).resource());
      }
    }
    // Gather non-java resources
    Object[] nonJavaResources = source.getNonJavaResources();
    int actualNonJavaResourceCount = 0;
    for (int i = 0, max = nonJavaResources.length; i < max; i++) {
      if (nonJavaResources[i] instanceof IResource) actualNonJavaResourceCount++;
    }
    IResource[] actualNonJavaResources = new IResource[actualNonJavaResourceCount];
    for (int i = 0, max = nonJavaResources.length, index = 0; i < max; i++) {
      if (nonJavaResources[i] instanceof IResource)
        actualNonJavaResources[index++] = (IResource) nonJavaResources[i];
    }

    if (actualNonJavaResourceCount != 0) {
      int correctKindChildrenSize = correctKindChildren.size();
      IResource[] result = new IResource[correctKindChildrenSize + actualNonJavaResourceCount];
      correctKindChildren.toArray(result);
      System.arraycopy(
          actualNonJavaResources, 0, result, correctKindChildrenSize, actualNonJavaResourceCount);
      return result;
    } else {
      IResource[] result = new IResource[correctKindChildren.size()];
      correctKindChildren.toArray(result);
      return result;
    }
  }
  /* Return the list of projects for which it requires a resource delta. This builder's project
   * is implicitly included and need not be specified. Builders must re-specify the list
   * of interesting projects every time they are run as this is not carried forward
   * beyond the next build. Missing projects should be specified but will be ignored until
   * they are added to the workspace.
   */
  private IProject[] getRequiredProjects(boolean includeBinaryPrerequisites) {
    if (this.javaProject == null || this.workspaceRoot == null) return new IProject[0];

    ArrayList projects = new ArrayList();
    ExternalFoldersManager externalFoldersManager = JavaModelManager.getExternalManager();
    try {
      IClasspathEntry[] entries = this.javaProject.getExpandedClasspath();
      for (int i = 0, l = entries.length; i < l; i++) {
        IClasspathEntry entry = entries[i];
        IPath path = entry.getPath();
        IProject p = null;
        switch (entry.getEntryKind()) {
          case IClasspathEntry.CPE_PROJECT:
            p =
                this.workspaceRoot.getProject(
                    path.lastSegment()); // missing projects are considered too
            if (((ClasspathEntry) entry).isOptional()
                && !JavaProject.hasJavaNature(p)) // except if entry is optional
            p = null;
            break;
          case IClasspathEntry.CPE_LIBRARY:
            if (includeBinaryPrerequisites && path.segmentCount() > 0) {
              // some binary resources on the class path can come from projects that are not
              // included in the project references
              IResource resource = this.workspaceRoot.findMember(path.segment(0));
              if (resource instanceof IProject) {
                p = (IProject) resource;
              } else {
                resource = externalFoldersManager.getFolder(path);
                if (resource != null) p = resource.getProject();
              }
            }
        }
        if (p != null && !projects.contains(p)) projects.add(p);
      }
    } catch (JavaModelException e) {
      return new IProject[0];
    }
    IProject[] result = new IProject[projects.size()];
    projects.toArray(result);
    return result;
  }
  private void buildForProject(
      JavaProject project,
      ArrayList potentialSubtypes,
      org.eclipse.jdt.core.ICompilationUnit[] workingCopies,
      HashSet localTypes,
      IProgressMonitor monitor)
      throws JavaModelException {
    // resolve
    int openablesLength = potentialSubtypes.size();
    if (openablesLength > 0) {
      // copy vectors into arrays
      Openable[] openables = new Openable[openablesLength];
      potentialSubtypes.toArray(openables);

      // sort in the order of roots and in reverse alphabetical order for .class file
      // since requesting top level types in the process of caching an enclosing type is
      // not supported by the lookup environment
      IPackageFragmentRoot[] roots = project.getPackageFragmentRoots();
      int rootsLength = roots.length;
      final HashtableOfObjectToInt indexes = new HashtableOfObjectToInt(openablesLength);
      for (int i = 0; i < openablesLength; i++) {
        IJavaElement root = openables[i].getAncestor(IJavaElement.PACKAGE_FRAGMENT_ROOT);
        int index;
        for (index = 0; index < rootsLength; index++) {
          if (roots[index].equals(root)) break;
        }
        indexes.put(openables[i], index);
      }
      Arrays.sort(
          openables,
          new Comparator() {
            public int compare(Object a, Object b) {
              int aIndex = indexes.get(a);
              int bIndex = indexes.get(b);
              if (aIndex != bIndex) return aIndex - bIndex;
              return ((Openable) b).getElementName().compareTo(((Openable) a).getElementName());
            }
          });

      IType focusType = getType();
      boolean inProjectOfFocusType =
          focusType != null && focusType.getJavaProject().equals(project);
      org.eclipse.jdt.core.ICompilationUnit[] unitsToLookInside = null;
      if (inProjectOfFocusType) {
        org.eclipse.jdt.core.ICompilationUnit unitToLookInside = focusType.getCompilationUnit();
        if (unitToLookInside != null) {
          int wcLength = workingCopies == null ? 0 : workingCopies.length;
          if (wcLength == 0) {
            unitsToLookInside = new org.eclipse.jdt.core.ICompilationUnit[] {unitToLookInside};
          } else {
            unitsToLookInside = new org.eclipse.jdt.core.ICompilationUnit[wcLength + 1];
            unitsToLookInside[0] = unitToLookInside;
            System.arraycopy(workingCopies, 0, unitsToLookInside, 1, wcLength);
          }
        } else {
          unitsToLookInside = workingCopies;
        }
      }

      SearchableEnvironment searchableEnvironment =
          project.newSearchableNameEnvironment(unitsToLookInside);
      this.nameLookup = searchableEnvironment.nameLookup;
      Map options = project.getOptions(true);
      // disable task tags to speed up parsing
      options.put(JavaCore.COMPILER_TASK_TAGS, ""); // $NON-NLS-1$
      this.hierarchyResolver =
          new HierarchyResolver(searchableEnvironment, options, this, new DefaultProblemFactory());
      if (focusType != null) {
        Member declaringMember = ((Member) focusType).getOuterMostLocalContext();
        if (declaringMember == null) {
          // top level or member type
          if (!inProjectOfFocusType) {
            char[] typeQualifiedName = focusType.getTypeQualifiedName('.').toCharArray();
            String[] packageName = ((PackageFragment) focusType.getPackageFragment()).names;
            if (searchableEnvironment.findType(typeQualifiedName, Util.toCharArrays(packageName))
                == null) {
              // focus type is not visible in this project: no need to go further
              return;
            }
          }
        } else {
          // local or anonymous type
          Openable openable;
          if (declaringMember.isBinary()) {
            openable = (Openable) declaringMember.getClassFile();
          } else {
            openable = (Openable) declaringMember.getCompilationUnit();
          }
          localTypes = new HashSet();
          localTypes.add(openable.getPath().toString());
          this.hierarchyResolver.resolve(new Openable[] {openable}, localTypes, monitor);
          return;
        }
      }
      this.hierarchyResolver.resolve(openables, localTypes, monitor);
    }
  }